PPG: colourful, energy-saving solutions for building envelopes

PPG Industries now has among its products for architects a single, comprehensive resource for the design of sustainable building envelopes thanks to advanced architectural glasses and metal roof coati…

PPG Industries now has among its products for architects a single, comprehensive resource for the design of sustainable building envelopes thanks to advanced architectural glasses and metal roof coatings. Thanks to an independent study, the US company has demonstrated that architects and building owners can obtain annual energy savings of more than USD 60,000 for a prototypical glass-walled, eight-story office building when substituting dual-pane tinted glass with PPG“s Solarban 70XL solar control, low-E glass. According to the same study, equipment costs for heating, ventilation and air-conditioning (HVAC) can be reduced by up to USD 400,000. Other than these cost savings, related carbon emissions from the building decreased by 400 to 500 tons per year, which is the annual output of about 75 passenger cars. Moreover, energy and environmental savings increase considerably when architects also use Duranar ULTRA-Cool metal roof coatings for their projects. These products are characterized by an advanced metal coating that reflects the sun“s heat energy, maintaining buildings cooler and thus obtaining great reductions in the heat-island effect associated with conventional roofing materials. PPG“s Solarban 70XL uses a triple-silver coating to reflect more than 73% of the sun“s heat energy in a standard one-inch insulating glass unit. The same coating also transmits almost 65% of the sun“s visible light, thus reducing the necessity for artificial lighting.